vander weyde



P. H. VANDER WEYDB. GAS GENERATOR.

No. 62,095. Patented Feb. 12, 1867.

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P. H. VANDER WEYDE, OF PHILADELPHIA, PEN NSYLVAN IA..

Laim Parmi N0. 62,095, and .Femm 12, 1867, amdaad Januar, 3o, 1867.

IMPROVEMENT IN GAS GENEBATORS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I` P. H. VANDER WEYDE, M. D., of the city and county of Philadelphia, State of Pennsylvania, have invcnterl an Improvement in Gus Generators adapted to keep on handnconstant supply of hydrogon, carbonio acid, or sulphide of hydrogen, with strong or weak pressure; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings.

The nature of my invention consists in two new arrangements, Figure 1 und Figure 2: the first to develop the said gases under pressure, the second to produce them under slight pressure. Both are chiefly/made of glue, and adapted for the laboratory, medical use, or other purposes.

To enable others to make and use this invention, Iwillproceed to describe their construction and operation.

A, fig. l, is the generator, and is simply u Wolfe bottle with three necks. In place of charging this apparatus at once with the substance from which the gas is to be developed, aud placing s full dose of the acid in contact with it, as thus fer was done in arrangements for this purpose, I keep those substances separate by placing the acid in a funnel-shaped and closed vessel, B, below provided with a stop-cock, which arrangement enables mc to admit only so much acid at a time as gives a suicient pressure for my purpose. As the pressure of gas in the lower vcssc would prevent the acid from flowing out from the lower end of the funnel W, the upper part of the vessels A and B are connected with the tubes derg lysecurely fastened to the necks at d and l` nir-tight at thc joints, and serving .it the same time to keep thc funnel B down, the connection at L giving free Communication to the air in both vessels. f is a safety tube, and k n. stop-cock to admit the gas to the working bottle C, which, however, may be omitted if desired. In C the gas passes through water, und will charge this water with it. The water may be drawn off throughg by pressing the stop-cockp iu the usual style of the soda-water bottle, or the gas may be drawn off nt t by turning the stp-cock S. r is another safety valve, of which the pressure is made less than the valvefin case it is desired to saturate the water with gas.

First, To generate sulphide of hydrogen with this apparatus, we place sulphide of iron' in the bottom of A, and, by turning` the stop-cock-Z, the dilutedl sulphuric acid from B will evolve from it the sulphide of hydrogen l gas, which will pzissjn the water in C, saturate it, and give n supply of this water as well as the pure gas. When we require the sulphide of hydrogen and ammonia for chemical test, we may lill this bottle with liquid ammonia, or, what is better, attach a second similar bottle with this liquid. Second, when we wish to generate hydrogen gas, we place zinc and water in A, and the rest of the operation is the same. Third, when we desire to generato cnrhonic acid gas, wc place bicarbonate of soda in A, and we will obtain in C carbonio acid water and carbonie acid gas under prcssnre, which is a great desideratum at presentfor surgical uses. Fourth, if we wish to generate oxygen, we place in A a clear solution of chloride of lime, and in B a solution of nitrate of cobalt. Fifth, if we wish to generato nitric oxide NO2, and hyponitric acid N04 we place in A scraps of copper, and in B nitric acid. Nitric oxide NO2 will first be developed, which in contact with the atmosphere will be changed into hyponitric acid N04. Sixth, if we Wish to produce nitrous oxide NO, we place in A scraps of zinc or iron, and in D diluted nitric acid. A mixture of nitrous oxide and nitric oxide NO and N0g is produced', of which the last may also be changed into nitrous oxide N O by passing it in C over scraps of nioistcncd lime, or through a solution of protosulphate of iron.

A, fig. 2, is only a modification of the inverted bell jur. It has a long neck to give place to the liquid ascending. It is contracted at C for the double purpose of having a support for the pleces of zinc or marble, :ind of exposing as little surface of liquid as possible to the contact of the gas, which, in cu-se of carbonio acid gen1-ration, absorbs enormous quantities of it. B B B B s.the glass vessel containing the acid, out of which thc vessel A is lifted in order t`o introduce the pieces of zinc or marble by the neck d, which is provided with a. lighrlitting stopper. By turning thc stop-cock e the air will escape byf. und the vessel A will ll with the diluted acid. B v closingtliis stop-cock the gas generated will drive the acid out by g, till, when it is no more in Contact with the solid substance in A,the evolution of gas ceases. The lower part has the shape of un' inverted lfunnel, h g li, iu order to collect all the gas evolved from small pieces of the solid which may accidentally fall through the opcningg to the bottoni of the jar B B B. When using the last apparatus for the evolution of hydrogen, zinc and diluted sulphuric ncid are used. When using it for carbonio acid, it is best to take pieces of inarhlc or dolomite and hydrochloric acid, as the sulphur-ic acid iis-""s with the lime s less soluble sulphate of linie, which coats the pieces and soon stops the operation.

What I claim as my invention, and wish to secure by Letters Patent, is 1. A gas generator; when the acid is entirely separated from the substance from which the gas is evolved, brought in contact ouly in proportion to the pressure and quantity required, and adapted to the instantaneous generation, without the application of heat, of the following gases: hydrogen, oxygen, carbonio acid, hydrosulphric acid, sulphide of ammonia., nitric and nitrous oxide, and hyponitric acid.

2. The long-necked belljar A, contracted and expanded below, as described above, preventing the absorp` tion of the gas by the liquid.

In testimony whereofI have signed my name to this specication in the presence of two subscribing witnesses- Y P. H. VANDER WEYDE. Witnesses:

A. M. FLEURY, Louis DE RINCRNAY. 

